/**
 * Copyright © 2019 同程艺龙 (zhihui.li@ly.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ly.train.flower.common.util;

import java.io.Serializable;

/**
 * @author leeyazhou
 */
public class AsyncResult<T> implements Serializable {
  private static final long serialVersionUID = 1L;
  private T result;
  private Throwable exception;

  public AsyncResult(T result) {
    this.result = result;
  }

  public AsyncResult(Throwable exception) {
    this.exception = exception;
  }

  public boolean isSuccess() {
    return exception == null;
  }

  public boolean isError() {
    return !this.isSuccess();
  }

  public T getResult() {
    return result;
  }

  public static <R> AsyncResult<R> success(R result) {
    return new AsyncResult<>(result);
  }

  public static <R> AsyncResult<R> fail(Throwable ex) {
    return new AsyncResult<>(ex);
  }
}
